ASTROSAT CZTI

Data Quality Report

Orbit 36136

Creation date: 2022-08-10T19:07:39.927545
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T04_069T01_9000005158_36136cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36136cztM0_level2_quad_clean.evt
Size (bytes)501,353,28082,336,320
Size478.1 MB 78.5 MB
Events in quadrant A3,447,235530,998
Events in quadrant B3,644,374527,151
Events in quadrant C4,310,596516,398
Events in quadrant D3,377,169502,246

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140393
B0146672
C0164872
D0140442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5965420.704107%
B59652103.520536%
C59651883.151718%
D59651191.994971%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 8681 5967 22 22 0.25% 0.37%
B 8681 5967 152 152 1.75% 2.55%
C 8681 5967 149 149 1.72% 2.50%
D 8681 5967 106 106 1.22% 1.78%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 223 468141 3346.93 685 674 139.7
A 10 83 187353 1336.57 685 674 139.7
A 9 143 118168 841.22 685 674 139.7
B 5 172 854278 6599.27 671 653 129.4
B 4 171 45223 344.57 671 653 129.4
B 0 213 32959 249.75 671 653 129.4
C 0 207 749355 4847.26 656 661 154.5
C 9 54 541829 3503.68 656 661 154.5
C 15 214 252641 1631.39 656 661 154.5
D 12 17 336547 2034.75 663 643 165.1
D 2 249 108026 650.48 663 643 165.1
D 12 6 106234 639.62 663 643 165.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter